Sean Sherk (right) takes down Hermes Franca on his way to a unanimous decision victory at UFC 73. Sherk, a former UFC lightweight champion, will square off with current champ BJ Penn at UFC 84.

Sean Sherk (right) takes down Hermes Franca on his way to a unanimous decision victory at UFC 73. Sherk, a former UFC lightweight champion, will square off with current champ BJ Penn at UFC 84. (Photo courtesy of Zuffa, LLC)